Frigotherm Engineering (Pty) Ltd | Unit 9, 1055 Anvil Road, Robertville | Johannesburg | 1709 | Tel: +27 11 672 4203
FRIGOTHERM

Shell and Tube Heat Exchangers -

Customised

                 the brochure.  
The benefits of FRIGOTHERM’s shell and tube heat exchangers Since cylinders and spheres exhibit the best yield strength when under pressure, it is not surprising that shell and tube heat exchangers are unbeatable when it comes to handling high pressure media, usually coupled with relatively high tempera- tures. This makes them robust and fault tolerant, another advantage that is unscrupulously exploited in many a rough industry.  Furthermore, since they are easily disassembled, cleaning them is also no difficult feat to perform.  In summary, the benefits of FRIGOTHERM shell and tube heat exchangers are as follows: Extensive design, materials and performance flexibility: o Design options include fixed tubesheets, floating tubesheets and removable bundles, manufactured in single- or multi-pass, straight or as a U-tube. o Material options include steel, stainless steel, copper, bronze, nickle, exotic alloys and titanium. This extensive flexibility results in tailored heat exchangers that perfectly match your specific heat transfer needs. High pressure and temperature handling capability. Capable of handling a wide range of fluids – ranging from water to oil to process and corrosive fluids – and gasses. Highly cost competitive. All of these are crucial advantages.  When compared to plate heat exchangers, however, they are the least effective when it comes to heat transfer coefficients and ratios like kW per kg. Nonetheless, when safety and a high degree of reliability and maintainability are important requirements, then this product is preferable. Crucial factors to consider:  standardised or customised The section that now follows provides a detailed outline of FRIGOTHERM’s range of customisedised shell and tube heat exchangers, all built in accordance with TEMA guidelines. Type AEW or BEW Specifications - Straight tube, removable bundle, packed floating tubesheet. Single- or two- pass tube arrangements for maximum efficiency over a wide variety of tube side flow rates. Standard shell sizes from 3 inches through to 22 inches in diametre; custom designs up to 42 inches in diametre. Available in horizontal and vertical installations as well as stacked assemblies. Standard design capabilities - Advantages - Floating tubesheet allows differential expansion between the shell and tubes. Maximum tube count per shell diametre. Shell side can be steam or mechanically cleaned. Bundle can be easily replaced or repaired. Less costly than full internal floating head-type construction. Limitations - Both shell side and tube side are exposed to packing, therefore volatile and / or toxic fluids should be avoided. Packing limits design pressure and temperature for both shell and tube sides. Type AEP or BEP Specifications - Straight tube, removable bundle, outside- packed floating head. Single- or multi- pass tube arrangements for maximum efficiency over a wide variety of tube side flow rates. Standard shell sizes from 6 inches through to 22 inches in diametre; custom designs up to 42 inches in diametre. Available for horizontal or vertical mounting. Standard design capabilities - Note: Custom designs to 3,600 psi / 24,816 kPa and 1,000 °F / 538 °C, depending on shell diametre and design temperature. Advantages - Floating tubesheet allows differential expansion between the shell and tubes. Shell side can be steam or mechanically cleaned. Bundle can be easily replaced or repaired. Less costly than full internal floating head-type construction. Only shell side fluids are exposed to packing. Volatile or toxic fluids are possible on the tube side. Provides a large bundle entrance area. Limitations - Shell side is limited to non-volatile and /or non-toxic fluids. Shell side packing limits design pressure and temperature. Less surface per given shell and tube size than the Type AEW or BEW designs. Type AEM or BEM Specifications - Straight tube, fixed tubesheet, removable channel or bonnet, or integral channel. Single- or multi-pass tube arrangements for maximum efficiency over a wide variety of tube side flow volumes. An expansion joint can be added to compensate for severe temperature differentials. Standard shell sizes from 5 inches through to 22 inches in diametre; custom designs up to 42 inches in diametre. Available for horizontal or vertical mounting. Standard design capabilities - Note: Custom designs to 3,600 psi / 24,816 kPa and 1,000 °F / 538 °C, depending on shell diametre and design temperature. Advantages - Less costly than removable bundle exchangers. Provides maximum heat transfer surface area per given shell and tube size. Easily interchangeable with designs of various other manufacturers. Tube side can be steam or mechanically cleaned. Only tube side fluids are exposed to gaskets.  Volatile or toxic fluids are possible on the shell side. Easy accessibility for tube side cleaning and inspection. No packed joints. Limitations - No provision for differential expansion of tubes and shell. Shell side may not be mechanically cleaned. Type AEU or BEU Specifications - U-tube, removable bundle or suction-heater (open-end shell) construction. Multi-pass tube arrangements for maximum efficiency over a wide variety of tube side flow volumes. Standard shell sizes from 5 inches through to 22 inches in diametre; custom designs up to 42 inches in diametre. Available for horizontal or vertical mounting. Standard design capabilities - Note: Custom designs to 3,600 psi / 24,816 kPa and 1,000 °F / 538 °C, depending on shell diametre and design temperature. Advantages - Allows for differential thermal expansion between shell and tubes as well as between individual tubes. High heat transfer surface area for given shell and tube size. Capable of withstanding thermal shock. The most economical of all shell and tube exchangers, and the least expensive of all basic designs. Shell side can be steam or mechanically cleaned. Bundle can be removed for shell side cleaning and maintenance. Limitations - Individual tube replacement is difficult. Cannot be made single-pass on tube side, so true counter current flow is not possible. Draining tube side is difficult in vertical (head-up) position. Tube side can be cleaned by chemical means only. Type AET or BET Specifications - Straight tube, internally bolted floating head, pull-through construction with removable bundle. Mullti-pass tube arrangements for maximum efficiency over a wide variety of tube side flow volumes. Standard shell sizes from 6 inches through to 22 inches in diametre; custom designs up to 42 inches in diametre. Standard design capabilities - Note: Custom designs to 3,600 psi / 24,816 kPa and 1,000 °F / 538 °C, depending on shell diametre and design temperature. Advantages - Bundle can be removed from shell for cleaning or maintenance. Allows for differential thermal expansion between shell and tubes. Lack of packed joints allows for handling volatile or toxic fluids. Large bundle entrance area. Bundle can be pulled without removing floating head cover. Limitations - Less heat transfer surface area given shell and tube size than other removable bundle designs. The costliest of all basic types of heat exchanger designs. Gasket leak detection is not possible on the floating head. Type AES or BES Specifications - Straight tube, internal clamp split ring, floating head, removable bundle. Mullti-pass tube arrangements for maximum efficiency over a wide variety of tube flow volumes. Standard shell sizes from 6 inches through to 22 inches in diametre; custom designs up to 42 inches in diametre. Available for horizontal or vertical mounting. Standard design capabilities - Note: Custom designs to 3,600 psi / 24,816 kPa and 1,000 °F / 538 °C, depending on shell diametre and design temperature. Advantages - Higher heat transfer surface area per given shell and tube size than pull-through designs (Type AET or BET). Bundle can be removed for shell side cleaning and maintenance. Allows for differential thermal expansion between the shell and tubes. Lack of packed joints allows for handling volatile and / or toxic fluids. Provides multi-pass tube arrangements. Limitations - Shell cover, clamp ring and floating head cover must be removed prior to removing bundle, resulting in higher maintenance cost compared to pull-through designs (Type AET or BET). More costly than fixed tubesheet and U-tube designs. Type BKU Specifications - U-tube or straight tube removable bundle or suction- heater (open-end shell) construction. Multi-pass tube arrangements for maximum efficiency over a wide variety of tube side flow volumes. Standard shell sizes for ¼, ½, ¾ and 1 ton steam output. Available for horizontal mounting. Integrated float sensor and demister. Standard design capabilities - Note: Custom designs to 3,600 psi / 24,816 kPa and 1,000 °F / 538 °C, depending on shell diametre and design temperature. Advantages - Allows for differential thermal expansion between shell and tubes as well as between individual tubes. High heat transfer surface area for given shell and tube size. Capable of withstanding severe thermal shocks. Shell side can be steam or mechanically cleaned. Bundle can be removed for shell side cleaning and maintenance. Electrically heated variant is also available. Limitations - Individual tube replacement is difficult. Tube side can be cleaned by chemical means only. Required data for the best shell and tube heat exchanger design ​State-of-the-art computer selection software is used, enabling the team to supply customers with the optimal model size.  The data required to make the optimal model size selection can be found in the GET A QUOTE section - simply click on SHELL AND TUBE HEAT EXCHANGERS, complete the form electronically and submit it to the FRIGOTHERM team. If you still require further assistance, please do not hesitate to contact us - we will be pleased to assist you. Summary Overview
MATERIALS   Standard Designs   Shells - Steel 304SS, 316SS, 304LSS,     316LSS up to 42-inch diametre   Bonnets / Channels - Steel, 304SS, 3136SS, 304LSS, 316LSS, Cast Iron, Cast Bronze,   Ductile Iron   Tubesheets - Aluminium Bronze, 90/10 CuNi, Muntz, RNB, 304SS, 316SS, 304LSS,    316LSS Steel   Tubes - Carbon Steel, Stainless Steel, Nickel and Nickel Alloys, Titanium and other Alloys, Bare and Lo-Fin Tubing   CAPABILITIES Tube expansion Seal and strength welding of  tubes to tubesheet Expansion joints (flanged and  flued head as well as bellows  type) Die pen and Helium leak testing Heat transfer test laboratory Radiographic, ultrasonic and magnetic particle testing (sub- contracted)
DESIGN CAPABILITIES   Custom Designs   Materials - Stainless steel(s) (including 300, 400  and 900 series), Titanium, 90/10 CuNi, 70/30 CuNi, Incoloy, Inconel, 254SMO (Note: Weld qualifications may have to be developed)   Diametre -  Up to 22 inches for standard designs Custom designs up to 42 inches   Length - Up to 30 feet for standard steel designs and 21 feet for standard stainless steel designs Custom designs up to 40 feet   Temperature - From -20 °F (-29 °C) up to 655 °F (343 °C) with standard designs Custom designs from -300 °F         (-184 °C) up to 1000°F (538 °C)   Weight - 10 tons maximum   SPECIFICATIONS ASME Section VIII Division 1 TEMA Classes “B”, “C” and “R” API The Pressure Equipment    Directive (97/23/EC) SANS 347
 MODELS OF EFFICIENCY   Customised Shell and Tubes,   OCC and Univex Series Brazed Plate Heat Exchangers Bolted Plate Heat Exchangers FOT Series Air Blast Oil Coolers Air Heaters, Steam Boilers
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Manufacturers of premier heat exchange equipment for Africa and beyond tel: +27 11 672 4203  /  e-mail: frigo@mweb.co.za
SIDE
DESIGN PRESSURE
DESIGN TEMPERATURE
Tube side
75 - 450 psi 517 - 3,102 kPa
-20 - 650 °F -29 - 343 °C
Shell side
75 - 300 psi 517 - 2,068 kPa
-20 - 650 °F -29 - 343 °C
SIDE
DESIGN PRESSURE
DESIGN TEMPERATURE
Tube side
75 - 450 psi 517 - 3,102 kPa
-20 - 650 °F -29 - 343 °C
Shell side
75 - 300 psi 517 - 2,068 kPa
-20 - 650 °F -29 - 343 °C
SIDE
DESIGN PRESSURE
DESIGN TEMPERATURE
Tube side
75 - 450 psi 517 - 3,102 kPa
-20 - 650 °F -29 - 343 °C
Shell side
75 - 300 psi 517 - 2,068 kPa
-20 - 650 °F -29 - 343 °C
SIDE
DESIGN PRESSURE
DESIGN TEMPERATURE
Tube side
75 - 450 psi 517 - 3,102 kPa
-20 - 650 °F -29 - 343 °C
Shell side
75 - 300 psi 517 - 2,068 kPa
-20 - 650 °F -29 - 343 °C
SIDE
DESIGN PRESSURE
DESIGN TEMPERATURE
Tube side
75 - 450 psi 517 - 3,102 kPa
-20 - 650 °F -29 - 343 °C
Shell side
75 - 300 psi 517 - 2,068 kPa
-20 - 650 °F -29 - 343 °C
SIDE
DESIGN PRESSURE
DESIGN TEMPERATURE
Tube side
75 - 450 psi 517 - 3,102 kPa
-20 - 650 °F -29 - 343 °C
Shell side
75 - 300 psi 517 - 2,068 kPa
-20 - 650 °F -29 - 343 °C
SIDE
DESIGN PRESSURE
DESIGN TEMPERATURE
Tube side
75 - 450 psi 517 - 3,102 kPa
-20 - 650 °F -29 - 343 °C
Shell side
75 - 300 psi 517 - 2,068 kPa
-20 - 650 °F -29 - 343 °C